Trump, the presumptive GOP presidential nominee, has been dogged by protesters during appearances in California in recent weeks. Dozens were arrested during protests in Costa Mesa and Anaheim. Protesters in Burlingame temporarily stymied Trump from entering a hotel for a speech.

“Protesters fell into Donald Trump's trap with their response to his campaign tactics Thursday. It was not one of San Jose's finer moments. Violence has no place in American politics,” the paper wrote.